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Reasons for negative results of the first 8 nucleic acid tests in a confirmed case in Sichuan


(Fighting new crown pneumonia) Sichuan Ziyang added 1 confirmed case expert explained why the previous 8 nucleic acid tests were negative

China News Network, Ziyang, February 25th (Wu Pinghua, He Zihan, Li Hongbei) A reporter learned from the Ziyang City Center for Disease Control and Prevention on the 25th that a suspected case in Anyue County, Ziyang City was converted to a confirmed case. "Notification of a confirmed case of New Coronary Pneumonia" shows that Tang Moumou performed 9 nucleic acid tests for 23 days from close contacts to suspected cases to confirmed cases. Why is it so long? Why is it repeatedly tested for nucleic acids? In this regard, disease control experts conducted a professional interpretation.

Patient Tang Moumou, female, 56 years old. His colleague Xu Moumou was diagnosed with a new type of coronavirus pneumonia in Chongqing while working at a hotel in Chongqing. Anyy County Center for Disease Control received a consultation from Chongqing on the evening of February 1. The letter, on February 2nd, Xu Moumou's close contact Tang Moumou concentrated medical observation in Anyue County.

From February 7 to 23, Ziyang City and Anyue County two-level hospitals took respiratory specimens 8 times and performed PCR nucleic acid tests. The results were negative. Until February 24, the ninth nucleic acid test on Tang Moumou was positive. According to the diagnosis and treatment of the sixth edition of the latest national new crown prevention and control plan, Tang Moumou was eventually diagnosed as a confirmed case.

Why does Tang Moumou undergo so many nucleic acid tests? And all were repeated with negative results of nucleic acid tests. In response to this problem, Zhang Daquan, director of the Center for Disease Control and Prevention of Ziyang City, said that during the concentrated medical observation from February 2 to February 6, Tang Moumou did not She developed clinical symptoms and had respiratory symptoms since February 7. She was then tested for nucleic acids. Four nucleic acid tests were performed on February 7, 8, 11, and 13, and a CT scan was performed on February 12 and 15, which showed a patchy shadow in the lungs. According to the city and county expert consultation and the outbreak prevention and control plan at that time, it could not be used as the basis for confirming the diagnosis. It was reported as a suspected case on the 16th.

It is reported that as of 24:00 on February 24, Ziyang City had reported 4 confirmed cases of new coronavirus pneumonia, of which 2 were cured and discharged, and the remaining 2 were still being treated in designated hospitals for isolation, and there were 1 suspected cases. There were 2 local reported case close contacts who were still in medical observation, and 447 local reported case close contacts who had been released from medical observation. (Finish)

Source: chinanews

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